Historically roof pitch was designated in two other ways.
Roof angle names.
Types of gable roofs.
It has two equal panels.
Butterfly roof v roof london roof.
A type of japanese roof construction.
The characteristics of a roof are dependent upon the purpose of the building that it covers the available roofing.
The v cut angle along the junction of two slopes of a roof.
A roof is the top covering of a building including all materials and constructions necessary to support it on the walls of the building or on uprights providing protection against rain snow sunlight extremes of temperature and wind.
Horizontal line at the top of the roof.
A cross gable roof is a design that consists of two or more gable roof ridges that intersect at an angle most commonly perpendicular to one another.
A type of gable found in some traditional japanese buildings.
A side gable is a basic pitched roof.
A kink separates the roof into two parts running towards each other at an obtuse angle.
Commonly used roof pitches were given names such as greek.
It is recommended to use at least a 10 12 pitch or 40 angle for snowy regions.
This type of roof is often seen in buildings with a more complex layout for example homes with an attached garage.
However if the roof also contains hips and valleys it should either be shingled or roofed with metal shingles or standing seam to help prevent roof leaks.
To ensure the valley is watertight it is covered by flashing made of a flexible material or of metal or better still a combination of the two.
A ratio of the ridge height to the width of the building span and as a ratio of the rafter length to the width of the building.